Carriage-shift stop for type-writing machines.



L. C. MYERS. OARRIAGEYSHIFT STOP FOR TYPE WRITING MACHINES.

AFPLICATIO N [.ILEDSEPT- 25. 19 M.

Patented Jan. 16,1917.

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7 BI 0!) and WITNESSES. I Rwy/1% UNITED STATES PATENT OFFICE.

LEWIS C. MYERS, BROOKLYN, NEW YORK, ASSIGNOR TD ROYAL TYPEW'EITERCOMPANY, INC., 01? NEW YORK, N. Y., A CORPORATION OF NEXV YORK.

CARRIAGE-SHIFT STOP FOR TYPE-WRITING MACHINES.

Specification of Letters Patent.

Patented Jan. 16, 1917.

Application filed September 25; 1914. Serial No. 863,439.

To all whom it may concern Be it known that I, LEWIS C. Mrnns, a

citizen of the United States of America, re-

siding in the borough of Brooklyn, county of Kings, and State of NewYork, have in vented a certain new and useful Improvement inCarriage-Shift Stops for Typeriting Machines, of which the followingis'a specification. This invention relates to that class of carriageshifting devices of typewriting machines which are vertically moved toproduce upper and lower case printing. Such devices are ordinarilyprovided with adjustable stops for the proper alinement of the twostyles of type which in operation are somewhat noisy. The device of thisinvention is for the purpose of eliminating this noise as much aspossible, and as designed is particularly applicable to the Royaltypewriting machine. It comprises a rod extending downwardly from thecarriage shift frame or the lower guide-way preferably having an offsetor return bend mediate its ends. The lower part of the rod passes freelythrough a lug projecting from the main frame of the machine and isprovided with nuts and check nuts to contact with the upper and undersides of said lug. Each side of the machine will be provided with a rodthus formed with the odset or return bend connecting its two members,which are preferably in line, leaving a gap at its central part so thatthe compression and tensional strains due to the shocks of suddenstoppage of the carriage in its two positions are not opposed by astraight line metallic connection, the noise of contact of the stopsbeing thereby greatly reduced. Of course it will be understood that therod will be sufiiciently rigid to avoid adverse vibrations of thecarriage as it is stopped in its two positions. To further reduce thenoise of opera- 7 tion it is proposed to place on the rod, be

tween the adjusting nuts and the lug,

washers of non-elastic sound deadening material, such ascopper.

In the accompanying of the Royal construction showing the improvedcarriage shift stop appliedthereto:

and Fig. 2, a front elevation of one of the carriage shift stops.

.3 designates the rotary platen having drawings forming part of thisspecification: Figure 1 is a s de elevation of parts of a typewrltingmachine hearings in the carriage, the two sides 4 of which are connectedtogether by a rod 5 guided in bearing rollers (5 supported on anextension 7 of the carriage shift frame 8. The lower part of thecarriage is supported by balls held in the lower rail 9 connected to theshift frame, said frame being, at each end, guided and controlled by alever plate 10 pivoted at 11 thereto. A rocking rod 29 carries the leverplate 10 and has hearings in the main frame of the machine.

12 is the parallel'link pivoted to the lower part of the shift frame andto the main frame. a part of one side of which is shown at 13, Fig. 2.The shift lever 14 by its right angle member 15 is connected to thelever plate 10 by a link 16, there being lost motion in the connectingjoint as shown at 17. Another rod 18 connects the member 15 of lever14lto a locking dog or pawl 19, which engages with a projection 20 onthe shift frame when it is in lower position, the arrangement being suchthat the dog 19 is moved away from projection 20 before the upwardmovement of the carriage com- Inences.

Extending downwardly from aleg at each side of the shift frame is asupporting and controlling-rod 21 formed with an offset or return bend22 at its central part, as shown at Fig. 1. Its lower end passes throughan opening in a lug 23 extending inwardly from the lower part of theside 13 of the main frame. This part of the rod is screw threaded toreceive the supporting and stop nuts 24: and 25 respectively and'theircheck nuts 26 and 27 Sound deadening washers 28 are shown on the rod 21against the nuts 24 and 25 to contact with the lug 23. These washersmaybe made of copper or any suitable non-elastic metal or materialadapted to eliminate or reduce the noise due to the sudden contacting ofthe stops and lug in operatingthis part of the machine.

The material of the rod 21 will, when pro vided with the offset 22 whichforms a gap mediate its connected and stopping points, he of such sizeand character as to resist without undue vibrations the suddencompression and tensional .strains to which 'it will be subjected. 4

The adjusting nuts provide a ready means foraceurately setting thecarriage for upper and lower case printing.

adapted to be applied to vertically movable carriages for case printingother than the Royal machine here illustrated, and that the two verticalparts of it may be arranged nother than a right line, as shown, when itis formed with the central bend.

I claim:

1. In a typewriter, a shiftahle carriage supporting frame, a rod securedto said frame and having a shock absorbing offset mediate its ends,means for shifting the carriageshift frame and means applied to the rodfor stopping the carriage-in its two set positions.

2. In a typewriter, a shiftable carriage supporting frame, a rod securedto said frame and having a shock absorbing offset mediate its endsconnected at its upper end to the carriage shift frame, means forshifting the carriage shift frame and means applied to the lower part ofthe rod for stop ping the carriage in its two set positions.

3. In a typewriter, a shiftable carriage supporting frame, a rod securedto said frame and having a shock absorbing offset mediate its endsconnected at its upper end i to the carriage slrift frame, means forshifting the carriage, lug on the main frame of the machine throughwhich the lower part of the rod passes, and means on the lower part ofthe rod for adjustably stopping it in two directions 4:. In atypewriter, a shiftable carriage to the carriage shift frame, means forshifting the carriage shift frame, a lug on the main frame of themachine through WhlCh the lower part of therrod passes, adjustable nutson the rod above and below the lug and sound deadening washers on therod between the nuts and the lug.

6. In a typewriter, the combination of a shift-able carriage-supportingframe, a vertically arranged rod secured to said frame and having alaterally projecting shock absorbing bend or offset intermediate itsends, and stops associated with the lower part of the rod for limitingits movements.

In testimony whereof, I have hereunto subscribed my name.

LEIVIS O. MYERS.

Witnesses GEORGE F. HANDLEY, VILLIAM LESLIE.

It is hereby certified that in Letters Patent No. 1 ,212,9s9, grantedJanu ary 16, 1917, upon the application of Lewis C. Myers, of Brooklyn,New York, for an improvement in OarriagwShift Stops for Type-WritingMachines, an error. appears in the printed specification requiringcorrection as follows: Page 2, line 28, claim 3, after the word carriageinsert. the words shift frame; and that the said Letters Patent shouldbe read with this correction therein that the same may conform to therecord of the case in the Patent Office.

Signed and sealed this 13th day (gt-February, A. D., 191?.

[seen] R. F. WHITEHEAD,

Acting Commissioner of Patents.

